class ShoppingRecord < ActiveRecord::Base
	belongs_to :shop
	belongs_to :shopping
  
#  def flow_cost
#    shopping_cost * 0.1
#  end
  
#  def people_cost
#    unit_price * number_of_people
#  end
  
#  def total_cost()
#    flow_cost + people_cost
#  end
end
